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10 Cards in this Set
- Front
- Back
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Define: Egg activation
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Sperm not capable of fertilization until they have been in the female reproductive tract for time, Inhibitory proteins that prevent fertilization have to be removed, Follicular fluid capacitates sperm in vitro
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Define: Conception
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fusion of the sperm and egg pronuclei
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Define: Genomic Imprinting
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Differential, reversible methylation of alleles by
males and females – resulting in either maternal or paternal gene being inactivated |
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Define: Turner's Syndrome
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women with one X chromosome are left sterile
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Define: Monozygotic twinning
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same sex and genes. may differ in mirror image, chromosome number, twin-twin transfusions, conjoined twins...triplets may occur
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Define: Dizygotic twinning
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no more similar than non-twin siblings, incidence increases with fertility treatments
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Define: Polar body twinning
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Egg may divide more evenly allowing polar
body to survive and be fertilized by different sperm, 75% identical (on average) |
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Define: Superfecundation and Superfetation
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Different eggs fertilized by different fathers. Different eggs fertilized on different days
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Define: Kleinfelters Syndrome
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men either have XXY or YY. very different then regular men.
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Define: Chimerism
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inserting cells from one thing into a completely opposite thing and creating a combination
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